.box1 .box2 {
  color: red;
}
.box1 > .box3 {
  color: red;
}
.box1:hover {
  color: sandybrown;
}
div .box1 {
  width: 100px;
}
.p1,
.p2 {
  width: 100px;
  height: 200px;
}
.p2 {
  color: seagreen;
}
.p3 {
  width: 100px;
  height: 200px;
}
.p5 {
  width: 100px;
  height: 100px;
}
div {
  width: 200px;
  height: 100px;
  border: 1px solid red;
}
span {
  color: #808080;
  background-color: #e6e6e6;
}
